Table 2. Crystallization.

Method	Hanging-drop vapour diffusion
Temperature (K)	293
Protein concentration (mg ml−1)	20
Buffer composition of protein solution	10 mM Tris–HCl pH 8.0, 100 mM NaCl, 3 mM DTT
Composition of reservoir solution	0.01 M magnesium acetate tetrahydrate, 0.05 M sodium cacodylate trihydrate pH 6.5, 1.3 M lithium sulfate monohydrate
Volume and ratio of drop	2 µl protein solution mixed with 2 µl reservoir solution
Volume of reservoir (µl)	500